Black hens are smarter than white ones,aren't they?什么意思?

Black hens are smarter than white ones,aren't they?什么意思? how many hens are there They are hens就划线部分提问 划线hens Mrs Black is so smart.They are all nice that we all like them意思 There are ( five )hens.刮号内提问 hens,chicks,they,are,and(.)_ the hens are at the beach You are very smart.. There are some hens there.怎么改为特殊疑问句? those,there,are,hens,over连词成句急急急 hens are really useful to people because they can I______eggs. Look!These are hens and roosters什么意思 There are fifteen hens对 fifteen 提问,怎样提 （1）how,jackets,the,much,are,at,Mr.Smart's （2）boys（1）how,jackets,the,much,are,at,Mr.Smart's（2）boys ,trousers,have,in,for,we,black以上的连词成句, 是so smart you are.还是 so smart are you. What are those?------( ) ----------------hens A.These are B.Those are C.They are you are really a smart 提问：You are realy smart.